Results 131 to 140 of about 857 (176)
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Classroom demonstrations of acoustic beamforming
The Journal of the Acoustical Society of America, 2012A tabletop apparatus permitting demonstrations and hands-on student exercises in the acoustic beamforming of linear arrays is described. The apparatus can be used to demonstrate how interference effects from two or more linearly arranged sources produce patterns of maxima and minima as described by theory. A transmitting array is attached to the top of
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Acoustic Conditions for Speech Communication in Classrooms
Scandinavian Audiology, 1991The purpose of this study was to measure reverberation times, background noise levels and Rapid Speech Transmission Index (RASTI) values in occupied and in unoccupied classrooms. Probability distributions of sound levels were also measured during classroom instruction.
E, Pekkarinen, V, Viljanen
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The Journal of the Acoustical Society of America, 1998
This pilot study used participatory fieldwork in a number of kindergarten through eighth grade classrooms to evaluate the acoustic setting that supports learning. Dynamic interactions among administrators, teachers, students, parents, and research team members makes a difference in learning. It was found that classroom interaction depends on the social
Mary Jo Hasell +8 more
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This pilot study used participatory fieldwork in a number of kindergarten through eighth grade classrooms to evaluate the acoustic setting that supports learning. Dynamic interactions among administrators, teachers, students, parents, and research team members makes a difference in learning. It was found that classroom interaction depends on the social
Mary Jo Hasell +8 more
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Acoustics in the public school classroom
The Journal of the Acoustical Society of America, 2008As mentioned in a DAGA 07 paper 1, physical science preparation in American schools often leaves something to be desired. In recent years the ASA Committee on Education in Acoustics has made an effort to participate in finding relief for that problem. Three approaches have been of some influence. 1. Teacher workshops; 2. Hands-on student sessions.
Uwe J Hansen, Corinne Darvennes
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Classroom acoustics in green schools.
The Journal of the Acoustical Society of America, 2008Green schools are becoming increasingly common as school districts continue to experience a rapid growth in population. These schools promote academic success and higher retention rates as well as healthier environments with cleaner air and more daylight as compared to their nongreen counterparts.
Pamela Harght, Robert C. Coffeen
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Batiment International, Building Research and Practice, 1982
For speech to be intelligible in classrooms, the reverberation time of sound should be reasonably short, allowing for the sound intensity required for the absorption characteristics. This optimum reverberation time is, in turn, related to the volume of the room and the degree of occupancy.
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For speech to be intelligible in classrooms, the reverberation time of sound should be reasonably short, allowing for the sound intensity required for the absorption characteristics. This optimum reverberation time is, in turn, related to the volume of the room and the degree of occupancy.
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The status of classroom acoustics in Colombia
The Journal of the Acoustical Society of America, 2015With the lack of standards to regulate classrooms in Colombia, we decided to find out what the current status was in terms of acoustical comfort. Due to the mild weather, classrooms usually do not have mechanical heating or cooling. For this reason, noise levels are mandated by proximity to busy roads or other noise sources.
Ana M. Jaramillo +2 more
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Acoustics in the elementary classroom
The Journal of the Acoustical Society of America, 2005The need for increased science exposure at all educational levels continues to be acute. Science is almost universally perceived as difficult, and its ability to raise the quality of life in the presence of apparently insurmountable social problems is increasingly suspect.
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Optimal acoustic conditions in classrooms
The Journal of the Acoustical Society of America, 1999Computer models of eight classrooms were constructed with varying combinations of absorbent materials on the surfaces of the rooms using the CATT 7.0 computer program. The amount, location and cost of finish materials and the noise levels produced by the air-conditioning system were varied in the models.
Gary W. Siebein +4 more
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Acoustical evaluation of preschool classrooms
The Journal of the Acoustical Society of America, 2003An investigation was made of the acoustical environments in the Berwick Preschool, Vancouver, in response to complaints by the teachers. Reverberation times (RT), background noise levels (BNL), and in-class sound levels (Leq) were measured for acoustical evaluation in the classrooms.
Wonyoung Yang, Murray Hodgson
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